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| - A geologic period is a subdivision of geologic time that divides an era into smaller timeframes. The equivalent term used to demarcate rock layers and the fossil record is the system; thus the rocks of the Devonian System were laid down during the Devonian Period. While paleontologists often refer to faunal stages rather than geologic periods, they are often used in popular presentations of paleontology. Such references include the book and movie Jurassic Park.
- Period is a term in secular geology that applies to a particular strata in the fossil record. The Jurassic period which supposedly happened 200 million years ago is an example of this. The current period we are now in, according to secular geologists, is the Quaternary Period which supposedly began around 2 million years ago. Creation scientists use period terms to describe strata but use it as a system only and not to refer to dates. The supposed epoch we are now in is known as the Holocene, which is part of the Quaternary Period. The Holocene is theorized to have covered that last 10,000 to 12,000 years. Young Earth creationists state that since the Earth only began 6,100 years ago (some creationists say up to 12,000), the Holocene encompasses all of the fossil strata, not just the Quate
- A geologic period is a time unit subdivision of geologic time defined as a span of years into which the larger era time units are divided into smaller timeframes, as era's divide the eon. In the Earth Sciences rocks and especially the sequences of rocks called stratum (plural: strata) arrayed in a ordered "rock column" occurring during a timespan are the focus of study so the time units are paired with corresponding Rock strata units whose characteristics define such points elsewhere that occurred concurrently as the local rock layers were laid down as sediments. For the Geological Period the paired rock strata term, a geologic stage is used to denote the corresponding rock layers of both the geologic record and the fossil record; thus the rocks of the Devonian System were laid down during
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| abstract
| - A geologic period is a subdivision of geologic time that divides an era into smaller timeframes. The equivalent term used to demarcate rock layers and the fossil record is the system; thus the rocks of the Devonian System were laid down during the Devonian Period. While paleontologists often refer to faunal stages rather than geologic periods, they are often used in popular presentations of paleontology. Such references include the book and movie Jurassic Park. As illustrated in the article on the geologic time scale, most periods are subdivided into smaller units called epochs. In 2004 the International Union of Geological Sciences (I.U.G.S.) recognized the Ediacaran period of the Neoproterozoic era, the first such newly-designated period in 130 years.
* Some Geologists still designate a third period, or "sub-era, of the Cenozoic Era called the Quaternary, comprising the last two epochs of the Neogene Period and extending up to the present.
- A geologic period is a time unit subdivision of geologic time defined as a span of years into which the larger era time units are divided into smaller timeframes, as era's divide the eon. In the Earth Sciences rocks and especially the sequences of rocks called stratum (plural: strata) arrayed in a ordered "rock column" occurring during a timespan are the focus of study so the time units are paired with corresponding Rock strata units whose characteristics define such points elsewhere that occurred concurrently as the local rock layers were laid down as sediments. For the Geological Period the paired rock strata term, a geologic stage is used to denote the corresponding rock layers of both the geologic record and the fossil record; thus the rocks of the Devonian System were laid down during the Devonian Period, and such equivalent units exist at each level of refinement of geological chronology and biogeological or stratigraphic classification. Each unit, of strata no matter how interrupted the record recorded in the local rock column is mapped into the overall geologic record and classified carefully into chronological units of geologic time based on world wide efforts of ISC working to correlate the world's local stratigraphic record into one uniform planet wide benchmarked system, in an steady effort ongoing since 1974. While paleontologists often refer to faunal stages rather than geologic periods, they are often used in popular presentations of paleontology or plate reconstructions. An example of a paleontological reference is the book and movie Jurassic Park. As illustrated in the article on the geologic time scale, most periods are subdivided into smaller units called epochs. In 2004 the International Union of Geological Sciences (I.U.G.S.) recognized the Ediacaran period of the Neoproterozoic era, the first such newly-designated period in 130 years.
- Period is a term in secular geology that applies to a particular strata in the fossil record. The Jurassic period which supposedly happened 200 million years ago is an example of this. The current period we are now in, according to secular geologists, is the Quaternary Period which supposedly began around 2 million years ago. Creation scientists use period terms to describe strata but use it as a system only and not to refer to dates. The supposed epoch we are now in is known as the Holocene, which is part of the Quaternary Period. The Holocene is theorized to have covered that last 10,000 to 12,000 years. Young Earth creationists state that since the Earth only began 6,100 years ago (some creationists say up to 12,000), the Holocene encompasses all of the fossil strata, not just the Quaternary.
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